Super Precision Angular Contact Ball Bearings S71928 ACD/P4ATGA

The S71928 ACD/P4ATGA is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 43875 lbf and operates smoothly at speeds up to 11000 RPM.

Its sealed design keeps grease in and contaminants out, while the phenolic cage ensures quiet, long-lasting performance. The bearing works reliably in temperatures from -30°C to 110°C.

This model is part of a matched set of three, suitable for universal mounting configurations like back-to-back or face-to-face. Ideal for high-precision applications such as machine tools or spindle drives.

Weighing 5.06kg, it’s robust yet designed for precision. Compliant with P4A tolerance class for exceptional accuracy.

Get A Free Quote

Description

Features

Application

Q&A

Product Parameters

Part Number S71928 ACD/P4ATGA
Brand TFL
Interchangeable SKF
Bore Dia 140 mm
Bore Dia Tolerance -0.004mm to 0
Outer Dia 190 mm
Outer Dia Tolerance -0.004mm to 0
Width 72 mm
Width Tolerance -0.2mm to 0
Ball Dia 15.875 mm
Ball Qty 29
Contact Angle 25°
Tolerance Class P4A
System of Measurement Metric
Seal Type Sealed
Matched Arrangement Universal matching
Number Of Bearings In Matched Set 3
Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
Preload Extra light / Class A
For Load Direction Angular Contact
Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Phenolic
Dynamic Radial Load 43875 lbf
Static Radial Load 75375 lbf
Lubrication Grease
Temperature Range - 30°C to 110 °C
Max Speed 11000 rpm
Weight 5.06 kg

Super Precision Angular Contact Ball Bearings S71928 ACD/P4ATGA dimension drawing

Download DWG Download PDF

Features

Performance Features of S71928 ACD/P4ATGA Bearing

S71928 ACD/P4ATGA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide strength, while the phenolic cage ensures smooth operation at high speeds.

With a dynamic radial load capacity of 43875 lbf, S71928 ACD/P4ATGA Bearing handles demanding conditions reliably.
The sealed design and grease lubrication reduce maintenance needs, extending its service life.

S71928 ACD/P4ATGA Bearing operates efficiently at speeds up to 11,000 rpm, balancing performance and durability.
Its universal matching capability allows flexible arrangement in back-to-back, face-to-face, or tandem configurations.

The P4A tolerance class ensures precision, making S71928 ACD/P4ATGA Bearing suitable for high-accuracy applications.
Its temperature range of -30°C to 110°C allows use in varied environments without compromising performance.

Application

Key Fields for S71928 ACD/P4ATGA Bearing
S71928 ACD/P4ATGA Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

In aerospace applications, S71928 ACD/P4ATGA Bearing supports critical components like turbine shafts, thanks to its extra light preload and high-speed capability. The universal matching feature allows for flexible arrangement in complex assemblies.

For robotics, S71928 ACD/P4ATGA Bearing provides smooth motion in articulated arms, with its phenolic cage reducing friction and wear. The P4A tolerance class ensures consistent performance in repetitive tasks.

Medical imaging systems benefit from S71928 ACD/P4ATGA Bearing’s low-noise operation and grease lubrication, which minimise maintenance needs. The chrome steel construction offers long-term reliability in sensitive equipment.

In automotive testing rigs, S71928 ACD/P4ATGA Bearing handles combined radial and axial loads with ease. Its 25° contact angle optimises load distribution for demanding test conditions.